What is the cheapest airline that flies from White Plains Westchester County to Lambert-St Louis?

American Airlines and Delta are the most popular carriers operating from White Plains Westchester County to Lambert-St Louis

What airlines fly to St. Louis?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to St. Louis from White Plains according to our data. United Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from White Plains Westchester County Airport to Lambert-St Louis Airport?

Prices for flights from White Plains Westchester County Airport to Lambert-St Louis Airport were last updated today.

How many operators does momondo search for flights from White Plains Westchester County Airport to Lambert-St Louis Airport?

The number of operators available for flights from White Plains Westchester County Airport to Lambert-St Louis Airport is 2 as of August 2025.

How old do you have to be to fly from White Plains Westchester County Airport to Lambert-St Louis Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from White Plains Westchester County Airport to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$135 Cheap Flights from White Plains to St. Louis in 2025

Q: What is the typical price of a round-trip flight between White Plains and St. Louis?

Prices are currently low for flights on this route. Typical prices usually range from $292 to $437. The lowest price recently found on this route was $261.

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Find the cheapest flights from White Plains to St. Louis

Round-trip

One-way

Last minute

Cheap round-trip flights

3:23 pm - 9:10 pmHPN-STL

6h 47m1 stop

6:10 am - 11:29 amSTL-HPN

4h 19m1 stop

$261American Airlines

Find Deal

Tue, Sep 16 - Tue, Sep 30

6:00 am - 12:31 pmHPN-STL

7h 31m1 stop

1:26 pm - 10:18 pmSTL-HPN

7h 52m1 stop

$265Delta

Find Deal

Tue, Sep 9 - Tue, Sep 16

6:54 pm - 11:05 pmHPN-STL

5h 11m1 stop

2:11 pm - 8:00 pmSTL-HPN

4h 49m1 stop

$269American Airlines

Find Deal

Tue, Sep 2 - Wed, Sep 10

4:30 pm - 10:17 pmHPN-STL

6h 47m1 stop

6:29 am - 1:11 pmSTL-HPN

5h 42m1 stop

$283American Airlines

Find Deal

Tue, Sep 2 - Sat, Sep 6

11:00 am - 4:14 pmHPN-STL

6h 14m1 stop

2:11 pm - 8:00 pmSTL-HPN

4h 49m1 stop

$292American Airlines

Find Deal

Tue, Sep 2 - Wed, Sep 10

6:40 pm - 11:24 pmHPN-STL

5h 44m1 stop

6:01 am - 2:29 pmSTL-HPN

7h 28m1 stop

$305Delta

Find Deal

Fri, Sep 26 - Mon, Sep 29

4:30 pm - 8:25 pmHPN-STL

4h 55m1 stop

6:00 pm - 11:26 pmSTL-HPN

4h 26m1 stop

$307American Airlines

Find Deal

Mon, Sep 8 - Fri, Sep 12

6:55 pm - 11:05 pmHPN-STL

5h 10m1 stop

6:00 am - 11:29 amSTL-HPN

4h 29m1 stop

$315American Airlines

Find Deal

Wed, Oct 15 - Sun, Oct 19

6:00 am - 9:59 amHPN-STL

4h 59m1 stop

6:01 am - 11:59 amSTL-HPN

4h 58m1 stop

$342Delta

Find Deal

Thu, Oct 2 - Sun, Oct 5

6:40 pm - 11:24 pmHPN-STL

5h 44m1 stop

3:36 pm - 11:59 amSTL-HPN

19h 23m2 stops

$343Delta

Find Deal

Fri, Sep 26 - Mon, Sep 29

American Airlines flights from White Plains to St. Louis

Our best American Airlines deals on White Plains to St. Louis flight tickets

American Airlines

Sep 16

HPN3:23 pmWhite Plains Westchester County

6h 47m

1 stop

STL9:10 pmLambert-St Louis

Sep 30

STL6:10 amLambert-St Louis

4h 19m

1 stop

HPN11:29 amWhite Plains Westchester County

$261

Find similar

American Airlines

Sep 2

HPN6:54 pmWhite Plains Westchester County

5h 11m

1 stop

STL11:05 pmLambert-St Louis

Sep 10

STL2:11 pmLambert-St Louis

4h 49m

1 stop

HPN8:00 pmWhite Plains Westchester County

$269

Find similar

American Airlines

Sep 2

HPN4:30 pmWhite Plains Westchester County

6h 47m

1 stop

STL10:17 pmLambert-St Louis

Sep 6

STL6:29 amLambert-St Louis

5h 42m

1 stop

HPN1:11 pmWhite Plains Westchester County

$283

Find similar

Delta flights from White Plains to St. Louis

Our best Delta deals on White Plains to St. Louis flight tickets

Delta

Sep 9

HPN6:00 amWhite Plains Westchester County

7h 31m

1 stop

STL12:31 pmLambert-St Louis

Sep 16

STL1:26 pmLambert-St Louis

7h 52m

1 stop

HPN10:18 pmWhite Plains Westchester County

$265

Find similar

Delta

Sep 26

HPN6:40 pmWhite Plains Westchester County

5h 44m

1 stop

STL11:24 pmLambert-St Louis

Sep 29

STL6:01 amLambert-St Louis

7h 28m

1 stop

HPN2:29 pmWhite Plains Westchester County

$305

Find similar

Delta

Aug 16

HPN5:15 pmWhite Plains Westchester County

5h 40m

1 stop

STL9:55 pmLambert-St Louis

Aug 20

STL3:40 pmLambert-St Louis

5h 43m

1 stop

HPN10:23 pmWhite Plains Westchester County

$315

Find similar

Fly from

Fly to

Route

Depart

Return

Price

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Tue 9/16

3:23 pm-9:10 pm

1 stop6h 47m

Lambert-St Louis

Tue 9/30

6:10 am-11:29 am

1 stop4h 19m

$261

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Tue 9/9

6:00 am-12:31 pm

1 stop7h 31m

Lambert-St Louis

Tue 9/16

1:26 pm-10:18 pm

1 stop7h 52m

$265

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Tue 9/2

6:54 pm-11:05 pm

1 stop5h 11m

Lambert-St Louis

Wed 9/10

2:11 pm-8:00 pm

1 stop4h 49m

$269

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Tue 9/2

4:30 pm-10:17 pm

1 stop6h 47m

Lambert-St Louis

Sat 9/6

6:29 am-1:11 pm

1 stop5h 42m

$283

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Tue 9/2

11:00 am-4:14 pm

1 stop6h 14m

Lambert-St Louis

Wed 9/10

2:11 pm-8:00 pm

1 stop4h 49m

$292

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Fri 9/26

6:40 pm-11:24 pm

1 stop5h 44m

Lambert-St Louis

Mon 9/29

6:01 am-2:29 pm

1 stop7h 28m

$305

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Mon 9/8

4:30 pm-8:25 pm

1 stop4h 55m

Lambert-St Louis

Fri 9/12

6:00 pm-11:26 pm

1 stop4h 26m

$307

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Wed 10/15

6:55 pm-11:05 pm

1 stop5h 10m

Lambert-St Louis

Sun 10/19

6:00 am-11:29 am

1 stop4h 29m

$315

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Thu 10/2

6:00 am-9:59 am

1 stop4h 59m

Lambert-St Louis

Sun 10/5

6:01 am-11:59 am

1 stop4h 58m

$342

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Fri 9/26

6:40 pm-11:24 pm

1 stop5h 44m

Lambert-St Louis

Mon 9/29

3:36 pm-11:59 am

2 stops19h 23m

$343

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from White Plains to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between White Plains and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, November is the cheapest month to fly from White Plains to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $273. The month of September is another great option to travel to St. Louis, with average flight prices from White Plains averaging around $279.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $333. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $440. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from White Plains in the morning is the least expensive time of day to depart. momondo users have found prices as low as $349 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $394 per ticket.

When to book flights from White Plains to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from White Plains to St. Louis according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap White Plains to St. Louis (HPN to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from White Plains to St. Louis

Best Price Found	$135
Fastest flight time	4h 03m
Direct flights	None
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from White Plains in the past 72 hours is $135. The best round-trip flight deal from White Plains to St. Louis found on momondo in the last 72 hours is $261.

The fastest flight from White Plains to St. Louis takes 4h 03m

There are no direct flights from White Plains to St. Louis. Popular non-direct route for this connection is White Plains Westchester County Airport - Lambert-St Louis Airport.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

How far is White Plains Westchester County to Lambert-St Louis by plane?
Lambert-St Louis is 885.7 mi away from White Plains Westchester County. A reasonable flight in good conditions will take 4h 03m.
When did momondo last update prices for flights from White Plains Westchester County Airport to Lambert-St Louis Airport?
Prices for flights from White Plains Westchester County Airport to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from White Plains Westchester County Airport to Lambert-St Louis Airport?
The number of operators available for flights from White Plains Westchester County Airport to Lambert-St Louis Airport is 2 as of August 2025.
How old do you have to be to fly from White Plains Westchester County Airport to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from White Plains Westchester County Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from White Plains to St. Louis?
momondo data reveals that the most frequently booked airline on the route from White Plains to St. Louis is American Airlines, representing 66% of all bookings. The subsequent popular airline is Delta at 34%.

Best airlines flying from White Plains to St. Louis

Compare and see reviews for airlines that fly from White Plains to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $242	Free Cancellation	Rating 8.0 7,980 reviews		Search Delta flights
American Airlines	PriceFrom $268	Free Cancellation	Rating 7.2 10,000 reviews		Search American Airlines flights

St. Charles

Chesterfield

Fairview Heights

Hermann

Maryland Heights

Florissant

O'Fallon

Fenton

Wentzville

Collinsville

Alton

St. Peters

Farmington

Festus

Glencoe

Eureka

Clayton

Edwardsville

Litchfield

Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from White Plains to St. Louis?

Finding the right flight to St. Louis from White Plains is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from White Plains to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for White Plains to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from White Plains to St. Louis?

Once you have performed a search for White Plains to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from White Plains to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from White Plains and alert you when they change.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from White Plains to St. Louis from $135

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from White Plains to St. Louis departing on 9/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from White Plains to St. Louis

Cheap round-trip flights

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American Airlines flights from White Plains to St. Louis

Our best American Airlines deals on White Plains to St. Louis flight tickets

Delta flights from White Plains to St. Louis

Our best Delta deals on White Plains to St. Louis flight tickets

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See travel insights to St. Louis from

How to get the cheapest flight ticket from White Plains to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between White Plains and St. Louis?

What is the cheapest month to fly to St. Louis?

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

What is the cheapest airline that flies from White Plains Westchester County to Lambert-St Louis?

American Airlines and Delta are the most popular carriers operating from White Plains Westchester County to Lambert-St Louis

What airlines fly to St. Louis?

When to book flights from White Plains to St. Louis

Cheap White Plains to St. Louis (HPN to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from White Plains to St. Louis

Best Price Found

Fastest flight time

Direct flights

Airports in St. Louis

How far is White Plains Westchester County to Lambert-St Louis by plane?

When did momondo last update prices for flights from White Plains Westchester County Airport to Lambert-St Louis Airport?

How many operators does momondo search for flights from White Plains Westchester County Airport to Lambert-St Louis Airport?

How old do you have to be to fly from White Plains Westchester County Airport to Lambert-St Louis Airport?

What documentation or ID do you need to fly to Lambert-St Louis Airport?

What is the most popular airline from White Plains to St. Louis?

Best airlines flying from White Plains to St. Louis

Compare and see reviews for airlines that fly from White Plains to St. Louis with momondo

Traveling to a place near St. Louis?

Why use momondo?

Why should I use momondo to find a flight deal from White Plains to St. Louis?

Can I find flights from White Plains to St. Louis with flexible booking policies on momondo?

How can momondo help me find flights from White Plains to St. Louis?

I’m not ready to book a flight from White Plains to St. Louis right now. Can momondo alert me if prices change?

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Missouri